Fruit-juice extractor



April 14, 1925. 1,533,208

A. T. PURSELL FRUIT JUIQE EXTRAGTOR Filed July 21, 19225 3 Sheets-Sheet 1 @Si E m1141925 y 1,533,208 y Y' A. T. PURSELL FRUIT JUICE EXTRACTOR Filed July 21, 1923 3 Sheets-Sheet 2 4pll'il 14, 1925.

A. T. PURSELL FRUIT JUICE EXTRACTOR Filed July 21, 1923 3 Sheets--Sheetl 5 ARTHUR-TODD PUELL, CHICAGO, IIEJLINOIS, ASSIGNOR TO ARNOLD ELECTRIC (30M-V P, F RACINE, WISCONSIN, CORPORATION OF VVISCO'NSIN.

ravir-irren nx'rnafcroa.

application mea .my 2i, 192s. serial no. stacca To all whom t may concern.'

Be it known that l, ARTHUR Toon PUR- i snLL, a citizen of the United States, and a resident of Chicago, in the ucounty of Cook and State oflllinois, have invented certain newv and useful Improvements in Fruit- Juice Extractors; and I do hereby declare that the following isa full, clear, and exact description thereof, reference being had to the accompanyin drawings, and to the characters of relerence marked thereon,

which form a part of this specication.

, This invention relates to improvements in motor-'driven juice extractors for citrus and other fruits, and the invention consists in the elements and comblnation of elements shown inthe drawings and described in the specification, and is pointed out in the appended claims.

Among the objects of the invention is to produce, in combination with the` extractor ulb, means whereby pressure of the fruit .on said bulb operates automatically to start the motor to rotate the bulb. lt the motor be an electric motor, the depression ot the bulb will operate the motor starting and stopping swltch.

Another object of the invention is to pro-A duce in anextractor for this purpose a novel reducing gear mechanism between the high s eed motor and. the mounting by which t e extractor' bulb is carried so as to thereby enable a motor to .be employed within the hollow stand of the extractor and reduce the dimensionsv of the device as a whole,A

while s'uitabl controlling the speed of the extractor buig.

Another ob'ect of the invention is to produce a novel owl,l into which the extractor extends, constructed to give tree access to the bulb and to avoid the juice being thrown out of the bowl by centrifugal action generated by the rotating bul and also to provide a spout construction in connection therewith that gives free access to the spout and the bowl to and bowl. Y

Other objects of the invention are to otherwise improve and simplify juice extractors of this character.

In the drawingsz.

Figure 1 isa vertical section of the casing and bowl and an elevation or the operative permit cleaning of the spout elements of an extractor embodying my invention.

Figure 2 is a plan View thereof.

Figure 3 is a partial section, on the line 3 3 of Figure 1, illustrating the construction of the extractor bulb, its mounting, a portion of the reducing gear, and of the switch for controlling. the motor circuit.

Figures 4 and 5 are horizontal sections of the bulb taken on the lines ld and 5 5, respectively, of Figure 3.

Figure 6 is a horizontal line 6-6 of Figure 1.

Figures 7, 8 and 9 are details ot the reduing driving mechanism, hereinafter to be. described.

As shown in the drawings:

10 designates a hollow casing constituting section on the the supporting and enclosing standard of the machine. It is open at its lower end and carries a flanged base 11 in which nre secured cushioning feet 12, and is enclosed at its upper end byv a wall 13. lll, 15 designate, respectively, upper and lower removably connect/ed sections of a bowl, designated as a whole by B, which is su ported on said standard and which catches te juice and directs it toward an outlet spout 16, shown as made part of the lower bowl section. The upper edge of the bowl section 14 is of general dat formation so as to aord ready access o f a piece ofl fruit to the extractor.1 bulb hereinafter described, and is formed with an inwardly turned lip 17 to prevent the juice being thrown outwardly by centrifugal force over the horizontal top of the bowl. The spout 16 is shown herein as -formecl in part integral with the lower bowl section 15, and in part by an u per removable plate 18 the removal of w lch permits access to the spout and the lower part of the bowl for cleaning the saine, when desired, and also tor the purposes of simplifying casting operations. Said bowl is sup orted on the top of the standard, being he d concentrically thereon by a circular ange or ring 19, upstanding from the top wall of the standard, by means of set screws '20 extendngthrough the skirt 15, of the lower section ot the bowl and into raised ich standard 10 and is supported, as by a suitable mounting ring 22, on the shell of the standard through the medium of screws 23. The motor may be of any suitable type. It is shown as an electric motor, `andfcan, by reason of its horse power rating, be a imiversal motor. rlhis is a compact motor and therefore enables the upright standard to be made of a correspondingly small diameter.

24 designates a part-tubular shaft that is'A sleeved over the upper end of the shaft of the motor 21, which latter shaft is supported and stabilized at its lower end by a central step bearin 26. Between the upper end of the motor s aft and the top wall of the socket in said part-tubular shaft 24 is a ball thrust bearing 27. 28 designates a second part-tubular shaft which is sleeved over the upper end of the shaft 24, as best shown in Figure 3. It turns with the tubular shaft 24 and is axially depressible against theaction of a spring 29 for the purpose of actuating a motor switch, as hereinafter described. For this purpose, a pin 30 extends through the solid upper end of the shaft 24 with its ends extending into and slidingly engaging diametric slots 31 in the shaft 28. The .said shafts 24 and 28 are normally held axially extended by the spiral expansion .spring 29 which is housed in the tubular shaft 28 and bears at its upper endagainst a wall in said shaft and at its lower end upon the shaft 24.

The shafts 24 and 28 constitute elements of a supporting and operating standard that .lies in the axis of the machine for the juice `extractor bulb, designated as a whole by `32.

Said bulb is closed at its top and is open at votherwise fixed to the motor shaft.

its. bottom. It is removably seated on a polysided tapered extension 33 of the up er axially movable shaft 28, it being provi ed with an interiorly tapered, polysided socket l 34 to t over the like-shaped upper or tipped and is rotatively mounted in suitable bearings 38' in the side walls of a gear support and housing, designated as a whole by 39, as bestshown in Figure 7. 0n the other end of said shaft 38 is a spiral gear 40, the thread of which is reversed and of greater pitch relatively to that of the spiral gear 37. Said'spiral gear 40 meshes with a rotative gear 41 disposed at a right angle to the shaft 38 and is rotatively supported in bearings 41 fixed in the housing 39. Said gear 41'rnesles with a larger gear 42 that is made part of orsfixed in any suitable manner to the lower end of the tubular shaft 24 constituting part of the bulb-supporting and actuating standard. Thev high rotation of the motor shaft 25, throu h the gears 36, 37, 40, 41 and '42, is reduce to drive the supporting and operating standard of the bulb, and the bulb surmounting the same, at

a suitablelow speed,l and by va sturdy and simple. gear mechanism which is very compact. Y

The extractor bulb is provided in its depending skirt or wallwith a plurality of .f

upright series of openings 48 which are angularly spaced and, as series, are slightly inclined to the axis of rotation of said extractor bulb, as best sho-wn' in Figure 1.

'Thesey openings are drilled or otherwise made in the wall or skirt ofthe bulb on horizontal axes at sharp angles to the4 tangent o`f the parts of the wall which they res '4 and 5. lf desired, the outer face o said pierce, as indicated most clearly in Fi Wall or skirt may be provided, adjacent to and parallel with each series of openin s 48, with ribs 49 which are sharpened an made deepest vat their centers and are tapered toward their ends, as shown in Figures 1 and 3. j

These openings 48 and their special formation perform two important functions. First, they permit the juice which is being extracted from the fruit to flow inwardly in part through said openings into the space enclosed b the wall of the bulb shelland thereby a ford large release for the down- .are

flow of `the juice. Second, the angle of the v openings is such as to provide cutting edges on the outer face of the wall which engage the meat of the fruit in a manner to better tear and crush the fruit meat in the extraction ofthe juice therefrom.` rlhe said ribs 49 are respectively positioned in rear' of their series of openings 48 relatively to the direction of rotation of the bulb so as to serve, not only as a means to crush the fruit meat, but as a means to guide some of the juices inwardly through said holes 48, and thus avoid clogging ofthe juice flow. For this reason, the'bulb can be made of smaller diametric dimension and can be rotated less rapidly than has heretofore been the common practice. Therefore, the area for flow may be increased approximately by the sum of the areas of said openings,'and the capacity of flow is enhanced by the trailing ribs 49.

The depressibility of the upper element of the extractor bulb supporting and operating standard makes it convenient and practicable to apply to the said upper element or tube 28 means for automatically closing the operating switch of the bulb.

Lasaaoc lcontrol for the purpose described, when an electric motor is used, is' herein shown and is made as follows: 50, 51 designate terminals in a loop of the motor circuit, comprising the conductors 52, 53. The terminal is mounted on an insulating block or bracket 54. The second terminal 51 is also mounted on said block and is provided with.

an upstanding bracket 55 to which is pivoted by a pivot bolt 56 a switch blade 57. Said blade is in current-conductin relation to the terminal 51 through sai pivot bolt 56. Said switch blade normally occupies an inclined or motor circuit opening position, as shown in Fi re 1, and 1s held in 'this position by a lea spring or springs 58. When in said open position, the forward end of the blade 57 is out of contact with the terminal 50. A spring plate 59 bears laterally against the free end of the blade and tends to hold it towards `'the terminal 50 andto press said blade into contact with the latter terminal when the free end of the blade is swung upwardly about its pivot, both by reason of the inclination of the said spring plate 59 and of the terminal`50, as will be clear from an inspection of Figure 3. When the free end of the switch blade is swung into its upper position and is, therefore, in contact with the terminal 50, Vthe motory circuit is closed j through the blade 55 between the outside power leads 60.

62 designates a disc that is fastened to the lower end of the tubular element 28 of the bulb-supportin and operating standard. -It is below t e pedestal top 13V and is above a sliding or roller bearer 63 that is fixed to the outer or rear end of the switch blade. The rising movement of said disc is arrested by contact of the cross pin 30 with the lower ends of the slots 31 in the tubular shaft element 28 of the bulbsupporting and operating shaft.

` In operation of the switch control, ressure of the fruit on the extractor ulb serves to depress the tubular 'element 28 of the bulb-supporting and operating stand- 50, whereupon the operating circuit is closed to the motor to rotate the ejector bulb through the driving and supporting connections described. The speed of the motor is reduced through the speed-reducas to suitably reduce the driving speed imparted to the head. Whenthe fruit is` raised otf the extractor bulb, the s ring 29 raises the tubular shaft 28 and the ulb and also the disc 62, whereupon the switch blade control spring 58 swings said blade into its motor circuit opening position.

The floor 61 of the bottom section of the bowl is inclined towards the spout 16 and is interrupted by an upstanding ard 62 which surrounds the upper en of the standard element 28, which latter has bearing in an upstanding sleeve 63 made integral with the top wall 13 of the hollow pedestal.

I claim as my invention:

1. A fruit juice extractor comprising a rotative extractor bulb, power means for rotating it and means controlled by pressure of the fruit on the bulb for controlling tranmission of power to said bulb.

2. ,A fruit juice extractor comprising a rotative extractor bulb, a motor for rotating said bulb and means actuated by pressure of the fruit on the bulb for controlling sa-id motor.

3. A fruit juice extractor comprising a rotative extractor bulb, a motor for rotating said bulb and means actuated by the release of pressure of the fruit on the bulb for disconnecting driving energy from the motor.

4. A fruit juice extractor comprising a rotative extractor bulb, an electric motor for rotating said bulb, a motor starting switch and means controlled by pressure of the fruitI and the bulb for actuating said switch.

5. A fruit juice extractor comprising an extractor bulb, a rotative supporting and (perating standard therefor, embracing a4 pressible element, a motor to rotate said standard, switch means forthe motor, and

switch actuating means carried by said depressible standard element.

6. A fruit juice extractor comprising an extractor bulb, a rotative supporting and operating standard therefor embracing spring-extended telescopic elements whereby the bulb is depressed upon the application of a piece of fruit thereto, a motor for rotating said standard, a switch for said motor, andV means carried by a depressible element of the standard to control said switch.

7 .f A fruit juice extractor comprising anextractor bulb, a rotative supporting and operating standard therefor embracing spring-extended telescopic elements-whereby the bulb is depressed upon the applica- ,ing mechanism in the casing or box 39 so tion of a piece of fruit thereto, a motor for rotating said standard, a switch for said motor, and a-disc carried by a depressible partof said standard and rotary therewith to engage and control said switch.

8. A fruit juice extractor comprising an extractor bulb, a. rotative supporting and operating standard there-for, embracing an inner element Iadapted for connection to a driving motor, and an outer tubular element telescopic thereover anddirectly car-v rying said bulb, a. spring to distend said outer element, a stop to arrest such distention, a motor connected to and driving in said standard', and means carried byfsaid outer element to control said motor.

.9. A- fruit juice extractor comprising an i extractor bulb, a rotative supporting and and a disc carried lby said outer element of j operating standard therefor, embracing an inner element adapted for connection-to a driving motor, and an outer tubular element telescopic thereover and directly carrying said bulb,.a spring to distend said outer element, a stop to arrest said distention and `to lock lthe standard members to rotate together, a switch for said motor the standard and depressible thereby for contact with said switch to control said motor. j 10. A fruit juice extractor including a hollow extractor bulb provided in its side wall with tangential juice clearance openings disposed, at such anglesto the axis of rotation as to produce at the outer lends .of said openings fruit meat cutting and crushing elements.

1l. A fruit juice extractor -comprising a pedestal, a bowl supported thereon, a rotative extractor bulb centrallywithin the bowl and means to drive it, said bowl having a top, generally horizo-ntal lip turned inwardly and downwardly around a top opening thereof.

12. A fruit juice extractor comprising a hollow pedestal forined with an upstanding bowl centering flange, a bowl supported on said pedestal and centered by said flange, a spout extending laterally from said bowl, an extracto-r bulb within said bowl and a motor within said pedestal for driving said bulb, said bowl having above the active ,part of said bulb a generally horizontal top o ening,v and the rim of said bowl around its 'orizontal top opening being provided with an inwardly and downwardly turned lip.

13.' A fruit juice extractor comprising a bowl and its support and means to detach.- ably fix it on.said support, and a rotative extractor bulby in said bowl with means to drive it, said bowl being made of two horizontally separable parts, the lower part being providedwith aspout and the upper part l being formed with a top horizontal opening inwardl 44hollow pedesta and open at its top, an extractor bulb within and the rimof said upper lpart around said top opening being turned downwardly and y' y 14. A fruit juice extractor comprising a pedestal, a bowl supported thereon, a rotative extractor bulb centrally within the bowl and a motor to drive it, said bulbvbeing hollow and downwardly open and provided with ajplurality-of juice clearance openings, and the bowl having a horizontal top opening surrounded by an-inwardly and downwardly turned lip formed from the wall of the bowl. y l

15. A .fruit juice extractor comprising a pedestal, a bowl supported thereon, a rotative extractor bulb centrally within the bowlv and a'motor to drive it, said bulb being holl'ow and downwardly open and provided in its side wall with an angularly spaced series of upright juice clearance openings, and provided. also in rear of said openings, relatively to the direction of rotation of said bulb, with exterior formations to direct the juice to said openings, said bowl having a horizontaltop opening surrounded by an inwardly and downwardly curved lip.

16. A fruit juice extractor comprising a rotative extractor bulb, an electric motor for' rotating said bulb, a' motor starting switch, means controlled by pressure of the fruit and the bulb for actuating said switch and spiral speed reducing gears in the drivin connection between the said motor and bub to reduce the vspeed of rotation of saidA bulb.

18. A fruit jluice extractor comprising a a bowl supported thereon the bowl, a motor within said pedestal, a rotative supporting and operating standard carrying at its upper end said bulb, a spiral gear fixed to the lower end of said standard, said standard having at its lower end an axial socket, a motor shaft having bearing in said socket and provided between said spiral e gear and motor with a spiral pinion, and

'speed reducinv spiral gears between said p1n1on and sai standard splral gear.

19. A fruit juice extractor comprising a hollow pedestal, a bowl supported thereon and open at itstop, an extractor bulb within the bowl, a motorwithin said pedestal, a r0-y tative supporting and operatin standard# carrying at its upper end said bu b, a spiral gear fixed to the lower end of said standard,

said standard having at its lower end an Iaxial socket, a motor shaft 'having bearing gear of said standard. l'

being arranged to actuate said switch upon a 'operated motor for drivin 20. In a fruit juice extractor, a resiliently supported juice extracting bit, an electrically said bit, a circuit for said inc tor, a switc controllin said circuit, and means associated withsaid bit for operating said switch upon displacement of said bit.

21. In a fruit juice'extractor, a juiceextracting bit, a longitudinallymovable shaft on Awhich' said bit is mounted, a motor for driving said shaft, a circuit for said motor, a switch controlling said circuit, said shaft disp cement thereof. A

422. In a' fruit iuice extractor, a juice extracting bit, a displaceable support 'on which said bit is mounted, an electrically operated motor for rotating said support, a circuit for said motor, ,a switch controlling said circuit, and means associated with said support for operating said switch upon displacement thereof.

23. In a fruit juice extractor, a juice extracting bit, a displaceable shaft for driving said bit, a motor for driving said shaft, a circuit for said motor,a switch controlling said circuit, said shaft 'being arranged to actuate said switch upon displacement Ithereof.

24. In a fruit juice extractor, a juice extracting bit, a shaft on which said bit is carried, an electrically operated motor, reducing gearing between saidk motor and said shaft, a circuit for said motor, a switch controlling said circuit, and means associated with said bit'for operating said switch upon vdisplacement of said bit.

vIn witness whereof I claim the foregoing as my invention, I hereunto append my Slgnature this th day of June, 1923.

ARTHUR ToDnPURsELL 

